Soccer could introduce game-defining goal-line technology at major tournaments as early as December.
Two systems, Hawk-Eye and GoalRef, have passed numerous scientific tests for judging when a ball has crossed the line and a goal has been scored.
The International Football Association Board is expected to give the technology the green light at a vote next week.
The system could then be in place in Japan when Chelsea plays in the FIFA World Cup at the end of the year.
The Hawk-Eye system – developed by a British company now owned by Sony – is based on cameras, while GoalRef – a Danish-German development – uses magnetic fields.
Each system is required to send an immediate message to a watch worn by the referee when the ball crosses the line.
Why not draw inspiration from Hawk-Eye and GoalRef, and develop your own sports-related technology?